Air-lift pump.



O, E. HARRIS.

AIR LIFT PUMP. APPLICATION FILED OUT. 30, 1908.

Patented June 1, i969,

MIL 1&2 I 0%;

similar yiew of a modified fornny UNITED sra'rgasgr a rnntr OFFICE.

OTTO E. HARRIS, OF INDIANAPOLIS, INDIANA, ASSIGNOR OFONE-HALF TO ORAN M. PRUIT' IY,

OF INDIANAPOLIS, INDIANA;

AIR-LIFT rims.

Theobject of my invention is to produce 10 an air-lift pump ofsuch construction as to produce a maximum outflow with a'mini. mum amount of 'air.

The accompanying drawings illustrate my invention.

Figurel is an tLXltLlSBtiQIl of an air-lift pump embodyin my invention; Fig. 2 a section, on an en arged scale, on line '2 2 of Fig. 1; Fig. '3 a perspective detail of the upper end of the cylindernozzlefyl lg. t a

In the drawings, 10 indicates the main body ofgthe pump, said body preferably having suitablestrainer 11 at its lower end/ Formed within body 10 is a main water-chamber 12 .and an air" assage 13,

said air passage at its lower en being inwardly and upwardly turned, as at 14 to' re-, ccive aprimary-nozzle 15 which is preferably contracted at an intermediate point in,

its length'as shown at 16. At the bottom of chamber 12 is a spider- 17 having a cen tral ring in which is threaded the lower end of a secondarynozzle 18 the lower end of said secondary nozzle surrounding nozzle 16 with its interior communicating freely at its lowerJend with the interior of strainer 11, the. chamber 12 also communicating freely with the interior of said strainer through the spaces between the arms of the spider 17. The secondary nozzle 18 is extended upwardlyin. the main chamber 12 for a considerable portion of the length of said. chamber and at itsnppenend said sec- 'ondary nozzle is rendered permeable by a multiplicity of outlets which begin some distance below the' top of the secondary nozzle. in Figs. 1, 2 and 3 said outlets-are shown as suhstal'ilially axial slits 2i, and. in Fig. they are shown as drilled. openings 22. 'lhreaded into the upper end of body ll), in'line wi'th chamber 12 lhoreo'liis a coupling 2;; into which is threzuled. at 2-1:, the upper end of a. tubular gathering hell 2?: the llared lower end 26 of which extends downward over and embraces the per- 7 Specification of Letters Patent.

1 Application filed October 30', 1908. Serial No. $60,197.

Patented June 1, 1909.

cation between the lower end of the gatheringbell and chamber 12. l

Secured to the upper end of coupling 23 to the top ot the well. Secured to body 10,

nieable upper end of the secolnlary nozzle, the annular space 27 forming a commune ,is a dischar e pipe 28 which is led upward in alinement with the air passage 13,15 an air supply tube 29.

In operation, the structure shown in Fig. 13. is immersed to a sufficient depth in thewater and air under pressure is forced througlipassages 29 and 13 and theprimary flow upward through the secondary nozzle 18. As it reaches the upper permeable end nozzle 15 thus causing the water and air to {of the secondary nozzle the stream of combinedair and water issues'not only in a di- "iect line from the upper end of the second ary nozzle but also spreads laterally so as to 11, and tend to, seal, the lower end. of the gathering bell 25, the stream continuing however to move upward and therefore draw I upward, into the gathering bell; the body' of water in the lower end of chamber 12. I

have found by experiment that,'. by making the upper end of the secondary nozzle permeable for an appreciable distance, the cilia.

ciency of. the device is materially increased 1 claim as my invention i 1. An air lift ump comprising an upwardly directed air nozzle, a tube'ofgrcater diameter than the air nozzle arranged with its lower end open to a water supply and embracing" upwardly directed portion of the air nozzle, and having its upper bud per-- meable for a distance below its upper extremity, and a secondpipe of lar er diameter than the first pipe with its ower end embracing the permeable up eriend of the first pipe at a distance thereiroih to the water su ply.

2. An air l'i t pump comprising, wardly directed air nozzle, a tube ofgr'eat diameter than the air nozzle arrange'dE-yvith its lower end open to a water su ply and;v embracing the upwardly directed portio of the air nozzle, and having its uppetien permeable for a distance below its upper-e3 tremity, and a second pipe of lar al diame ter than the first pipe with its lowerenjd embracing the permeable upper end of the per end of the first pipe.

open

I 3Q3A11'E1iieiiffi pump comprising a main tubular body, 'an'air nozzle arranged therein and'diseharging upwardiy, a secondary nozzle efgr'eater diameter than the primary noz- 1 1 'pli'mary nozzlenand communicatm with the having its lower end embracing said fluid supply, said secondary nozz e having a; p'erm'eableupper end,-and a gathering bell embnieing the permeable upper end of the secondary nozzle and communicating with the fluid sup'ply surrounding the secondary nozzle.

In Witness whereof, I have hereunto set my hand and seal at- Indianapolis, Indiana, this twenty-third day of September, A. D. 1? one thousand nine hundred and eight. 

